...he conducted himself with charm, wit and theatrics; traits attributed to Aphrodite...
Theatrics, I believe, belongs to Jupiter. Wit is most likely a Mercurial trait. Charm is Venus, yes, and in both zodiacs Mercury, the planet of communication is in Taurus with Venus as dispositor. We do have a problem with multiple Hellenistic authors that often don't always agree with each other, and I personally don't have time to scan all the literature.
Also, sidereally, Helios is Lord of Fortune so one would expect the native's fortune to be in some manner connected with leadership and authority or at the least, someone in a position of authority...
I tend to see any well placed planets in pivots as simply being "strong" or conducive to business. D&F doesn't list Helios as linked to "leadership and authority." Then again we may have to have a broader definition of both these terms in modern times. To be thorough, we'd have to consult several of the early Hellenistic authors, and we know that almost immediately these authors put their on stamp on their writings.
So (as is my habit) I decided to look at similar configurations in modern charts. First I pulled charts from ADB with Capricorn ascendants and Sun, Mars and Venus in Aries. There were only five charts including Parr's. Three of these charts would have tropical Aquarius rising, and except when noted, the stellium would be in Taurus. Three are singers (!), and one is a theatre producer (directive, authority). Singers: great for these planets being in Taurus, right?! Let's look at Venus:
Maria Alcina, Brazilian singer: 14 Cap Asc; Sun 8, Venus 9, Mercury 18 Aries; Venus and Mercury fall on either side of the ascendant degree, and Venus is placed between Sun and Mercury. Sun is in adherence to Venus, and Venus is in concourse with Mercury. We have a strong Venus, especially in tropical Taurus. The problem is that Mars is the 10th lord for tropical Aquarius. Mars himself is in tropical Aries with Rahu (Moon's north node). Sidereally we lose Taurus completely, but Sun and Venus are in the bounds of Venus. (The zodiac question is never going to be easy!)
In the sidereal zodiac Venus is apparently helped by adherence to an exalted Sun, and this adherence has perhaps given the self-assurance to perform before the public.
Veronique Sanson, French singer 27 Cap rising; Mars 2; Rahu 2; Sun 10; Venus 12; Mercury 22 Aries. This lady was born two days after Maria Alcina, and she has the same configuration of Sun-Venus-Mercury-Mars-Rahu. Tropical Aquarius rising, stellium in Taurus, Mars-Rahu in Aries. Sun and Venus in sidereal bounds of Venus.
Giorgio DeLullo, actor and theatre producer; 17 Cap ascendant; Venus and Sun in Venus bounds in Aries; But in this case the Sun adjoins the ascendant degree in the 4th pivot rather than Venus or Mercury. Venus is in adherence to the Sun; Sun is in trinal configuration to Jupiter. It would seem that the Sun-Jupiter contact is responsible for him being a producer (authority) rather than only a performer.
Engelbert Humperdinct, Las Vegas entertainer, singer; Highly popular, a sex symbol with over 200 concerts a year. Here Venus is very close to the ascendant degree in the 4th pivot. Capricorn also rises in the tropical chart. Venus is in Aries in both zodiacs, in Jupiter's bounds sidereally and in Saturn's bounds tropically. Sun and Mars are in tropical Taurus.
There was a question about enclosure under the D&F topic. As these charts all belong to successful people, enclosure seems to support rather than restrict the enclosed planets. The situation is similar in most of the charts: Tropically Venus is in her own chariot enclosed by planets in Taurus. Sidereally Venus is in an unfriendly trigon, but enclosed by well placed planets. This can be seen as a toss-up.
We can, of course go further with interpretation by considering Mr. Schmidt's three priorities: Placement of (1) lord of the hour marker, (2) the lord of the Lot of Fortune; and (3) the sect lords of the light. For myself, until these three positions are thoroughly explored, I'm not willing to bring in other factors for interpretation.
I've noted the above positions in detail because of what happens when we study charts with Venus removed from the sidereal Aries/tropical Taurus stellium. There were seven charts in ADB with sidereal Capricorn rising with Sun and Mars (but not Venus) in Aries. With this pattern we see something very interesting happening. The warrior Mars is triumphant, and there is no influence of Venus:
Ernest Hellum, a soldier and victim of a fatal accident
Alessandro Sommacampagna, Italian terrorist
Edith Vuarnet, member of a cult (4th?), found murdered; Also she belonged to a noted family (exalted Sun in 4th, place of the parents)
Homicide 1184: Drinking and driving, killed his passenger in an accident. Sent to prison for manslaughter, but released within a year.
Of the three remaining charts:
Janice Giles, astrologer; no other information given
Arthur Borges, noted family (exalted Sun in 4th)
Walter Slezak, actor, won awards, sang at the Met, many broadway hits, son of noted operatic tenor; death by suicide
Of the seven charts, we have three from noted families, which would give some support the concept of the 4th being related to parents. (One possible manifestation of an exalted Sun?) Five of the seven were involved in accidents/homicides/suicide which would support the theory that an angular malefic in its own chariot is not a good thing. If the Sun is exalted, then the position of Mars in Aries is no help without counteracting influence from Venus or Jupiter. Tropically Mars in Venus-ruled Taurus doesn't take on a Venus tone in these more difficult charts. Only Edith Vuarnet's Mars remains in Aries tropically: Uranus-Sun-Mars all remain in Aries, Aquarius ascendant.
Of course, timing is everything. Every configuration in a chart doesn't manifest throughout the life. Both Walter Slezak (suicide) and Jack Parr (multiple health issues from 1989-91) have Mars in sidereal Aries in the 4th as do all the charts discussed here.
All these charts can be viewed, studied and printed (tropically) from the Wiki AstroDatabank site. The sidereal charts are not available on Wiki, but can be computed from the data. For interest and comparison I'll add another post dealing with charts with Sun in tropical Aries/sidereal Pisces in the 4th place. I'm using whole sign houses in these posts.
Therese Hamilton